Foldable umbrella frame having five ribs (II)

ABSTRACT

The invention relates to a foldable umbrella frame having five ribs (II), wherein the first rib, the third rib, and the fourth rib are formed to be solid rods with outer flat portion. The second rib is still U-shaped structure and has its outer end with two parallel plates for receiving the inner end of the third rib when closing the umbrella. The ribs are pivoted to form a frame. Branch ribs have inner hooks to connect with outer flat portion that provides a small volume of the umbrella in closed state for facilitating carrying by users.

FIELD OF THE INVENTION

The present invention relates to a foldable umbrella frame having fiveribs, which is particularly about an improvement of a five-foldedumbrella.

BACKGROUND OF THE INVENTION

Generally, a five-folded umbrella is an umbrella having five ribs toassemble the frame that obtains a small volume for facilitating carryingby users. As shown in FIG. 1,, each of the conventional umbrella frames(1) includes a first rib (11), a second rib (12), a third rib (13), afourth rib (14), and a tail rib (15). It is known that the-first rib(11), the second rib (12), and the third (13) are usually formed to havea U-shape cross-section and the ribs are pivoted with each other. Whenthe conventional umbrella is closed as shown in FIG. 2, the ribs will beresistant against others and make the frame (1) be slightly expanded.Accordingly, the five-folded umbrella has a short length but has a largediameter. The volume of the collapsible umbrella in closed state isstill large and it is not very convenient for carrying.

SUMMARY OF THE INVENTION

The present invention is to provide a five-folded umbrella having fiveribs, wherein the ribs are improved to overcome the drawback of theconventional one. Hence, the improved umbrella can provide a smallvolume for facilitating carrying. Now, accompanying with the followingdrawings, the character of the present invention will be described hereand after.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a plan view showing a single frame of a convention five-foldedumbrella.

FIG. 2 is a plan view showing a conventional five-folded umbrella inclosed state.

FIG. 3 is a plan view showing a single frame having five ribs accordingto the present invention.

FIG. 4 is a plan view showing a five-folded umbrella in closed stateaccording to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The present invention is to provide an improvement about a five-foldedumbrella. Please refer to FIG. 3 and 4, it shows a foldable five-foldedumbrella, which includes a first rib (31), a second rib (32), a thirdrib (33), a fourth rib (34), and a tail rib (35) to assemble a frame(3). The characteristic of the present invention is the first rib (31),the third rib (33), and the fourth rib (34) are formed to be solid ribs,wherein the first rib (31) has its both ends and middle portion to beflat structure while the third rib (33) and the fourth rib (34) havetheir outer end to be flat. The umbrella of this invention also includesa second branch rib (321) and a fourth branch rib (341), both of whichhave inner hook for connecting with outer flat portion of the first rib(31) and the third rib (33) respectively. The second rib (32) is stillU-shaped structure and has its outer end with two parallel plates forreceiving the inner end of the third rib (33) when closing the umbrella.Hence, the umbrella according to the present invention has a smallvolume as it is closed since the flat portions avoid resistance betweenthe ribs.

Above all, the present invention mainly improves the structure ofumbrella ribs and their connecting structures. It provides a smallvolume of the five-folded umbrella in closed state that obtains theimprovement and utilization.

1. A foldable umbrella frame having five ribs being pivoted and the improvement is that first ribs, third ribs, and fourth ribs of the umbrella frame being solid, wherein the first rib has its both ends and middle portion to be flat; the third rib and the fourth rib have their outer end to be flat; a second branch rib and a fourth branch rib having inner hook being provided for connecting with outer flat portion of the first rib and the third rib respectively; the second rib being still U-shaped structure and having its outer end with two parallel plates for receiving the inner end of the third rib when closing the umbrella. 